Planohraph co



G. W. JACKSON. Boom AND BUCKET coNmoL Fon LOADING AND ExcAvAmG MACHINES.

APPLICATION FILD APR. 22. |913. 1,313,221 Patented Aug. 12,1919.

5 SHEETS-SHEE 1.

111B ooLuMBIA PLANGURAPH no.. WASHlNd'mN. n. c.

Patented Aug. 12, 1919.

6 sniissunt 2.

G. W. JACKSON. ABoom AND aucun coNmoL Fon LoADmG ANU ExcAvAmG MACHINES. APPLICATION FILED APR.22. |918. 1,313,221.

fg-o

THB CDLUMBIA rumoammll no., WASNINGNN. D. c.

uw. 0... o mlwdw. wl o um I-: l 1 Y c... o Q #nu o Q un@ wn- 1 m., 0,. o a. o EN ,t Qn o @l m( 1 4 u 0 l. A o/ o o R m O NJ/f/r/ Q E G O 0 O 0 0 Il) M@ f... e f o m 11 G. W. JACKSON.

BOOM AND BUCKET CONTROL FOR LOADING AND EXCAVAHNG MACHINES.

APrLlcmos man mx. 22. ma.

1,313,221. l Bateman@ 12,1919.

Y 6 SHEETS-SHEET 3.

G. W. IACKSON.

BOOM AND BUCKET CONTROL FOR LOADING AND EXCAVATING MACHINES.

APPLl'cmon min Amzz. Isla.

Patented Aug. 12, 1919.

6 SHEETS-SHEET 4.

'mn commun Pumounnpn co.. WASMNGTDN. D. c.

G. W. JACKSON.

BOOM AND BUCKET CONTROL FOR LOADING AND EXCAVATING MACHINES.

APPLlcAlon men Amzz. ma.

1,313,221 Patenwd Aug. 12, 1919.

6 SHEETS-SHEET 5.

S "fb a 'HIB COLUMIIA PLANOCIIAPII C0., 'IAIUIMIDM D. C.

G. W. MCKSON.

FUR LOADING AND EXCAVAUNG MACHINES.

BOGM AND BUCKET CONTROL APPLICATION FILED APR. 22. |918. 1 ,3 13,221 1 Patented Aug. 12, 1919.

6 SHEETS-SHEET 6.

Till CBLUMBIA HAMM?" 0.. WASHIRUIUN. D. L

UNITED STA TES PATENT OFFICE.

GEORGE W. JACKSON, OF CHICAGO, ILLINOIS, ASSIG-NOB, BY MESNE ASSIGNMENTS, TO

AMERICAN POWER SHOVEL COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORA- TION 0F WISCONSIN.

BOOM .AND BUCKET CONTROL FOR LOADING- AND EXCAVATING MACHINES.

To all whom t may concern:

Be it known that I, (luenen W. JACKSON, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful 1m rovements in Boom and Bucket Controls or Loading and Excavating Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specication.

This invention relates to improvements in machines for handling material, sometimes known as loading machines, constructed and arranged to pick up material from one point and carry it by a series of buckets and a take-olf device to a point where the material is to be deposited or loaded on a transporting vehicle.

The invention relates more particularly to the construction and arrangement of the boom :for supporting the buckets or scoops by which the material picked u and carried backwardly, and to the means or adjusting the bucket carrying boom and for actuating the endless series of buckets thereon.

Among the objects of the invention is to provide a construction in a machine of this character which adapts the machine to handle heavy materials, such as broken stone, coal, ore, and the like, and which is also adapted, in the manner of a trench machine, to remove normally solid materials, such, for instance, as earth, unbroken ore deposits, and the like, and carry them backwardly to a place of disposal.

Other objects of the invention are to improve, simplify, and increase theeiiciency of machines of this character, and the invention consists in the combination and arrangement of the parts as shown in the drawings and described in the specification, and is pointed out in the appended claims.

In the drawings,

Figure 1 is a partiall side view of a machine embodying my invention.

Fig. 2 is a vertical section thereof with parts in elevation.

Fig. 3 is a plan view of the machine.

Fig. 4 is a vertical section on the line 4-4 of Fig. 1.

Specification of Letters Patent.

Patented Aug. 12. 1919.

Application led April 22, 1918. Serial N0. 230,029.

Fig. 5 is a horizontal section on the line 5-5 of Fig. 1.

Fig. 6 is a section on the line 6-6 of supported on and directed by a caterpillar,

drive, embracing toothed wheels 14, 14 and an endless series of articulated tread sections 15 (Fig. 1) trained thereabout. The construction of the caterpillar drive, as herein shown, is like that illustrated in my prior application for United States Letters Patent Serial Number 223,058, filed March 18, 1918, but may be otherwise constructed and arranged.

Supported on the carriage, through the medium of anti-friction rollers 17, is a cast metal turntable 18. It rotates about an axis consisting as herein shown, of a vertical shaft 19 that is seated in and extends upwardly through a boss 20 of the bed plate. The shaft 19 is held in place by upper and lower washers 21, 22, respectively. The bed plate 13 is provided with an upstanding ange 24,l which extends into an annular, downwardly opening, recess in the turntable, and is provided with a curved series of teeth 25 which are adapted to be engaged by a pinion 25 rotatively mounted on the turntable and driven from any suitable source of power, whereby the turntable may be rotated about its pivot shaft 19, so as to direct the buckets on the boom, hereinafter described, to the work through an arc of approximately 180 degrees.

he turntable is provided at the forward end of the machine with forwardly directed, laterally spaced, arms 26, which, as herein shown, are made integral with the turntable. Rising from the turntable at laterally opposite sides thereof, and abreast the pivot shaft 19, are cast metal'standards 28 which comprise flanged members that are rigidly connected at their upper ends, and the bases 30 0f Willich larebolted: or otherwiseirigidly secured to the turntable. The upper ends of the standards are fashioned to form bearin'gs 31 for a shaft 32o-n which is pivotally mounted the rear end ofa boom, designated as a whole by 33. Said boom comprises a rear, generally horizontal, portion and aforwardly tending, downwardly curved portion. It comprises side, inwardly flanged plates f35-'tha9t are -connected by tie bolts 36 and spaced by spacing tubes 37 ,to form a rigid boom structure. The flan es 38 of said Side members-ccnstitutetrac s to support an endless series of buckets `35)., 111 the manner illustrated in my prior appllcatlon for United States Letters Patent Serial Number 224,439, filed March 25, 1918; the tracks at the upper side of the boom directly supportinglthe bucket sections 40, and the tracks at the lower side of the boom supporting` said bucket sections throughthe mediam of laterally extending arms 41 1ntegraLwi-thsaid :bucket sections, as best shown inEigi. Said track flanges are cuived at the ends of the .boom to `constitute continuous tracks for the endlessbucket structure. The construction of the bucket structure V.constitutes no part of,I thepresent inventlon and the details thereofnneed not bespecially referred to herein.

e. boom issupported on the arms 26 through the Amedium of buffer yokes 45, the necks 46 of which are .fpivoted at their lower endsat 4.7 to parte carriedby and fixed on the.arms..2 6. Saidyokes are slotted to receive bearings 48 for a shaft 49 that exte ds laterally through lthe boom. Upper an 4 lower spiral s rings 5.0, 5l are interposedibetween said earrings 48 and the end walls of the yokes, the function of whlch s rings is to cushion the connection between t ebuier yokesand the forwardly. extendi arms.26 of .the turntable, andzthereb re eve theshaft 4Q-and its bearings, as we l also as the pivot. 46 for the yokes, from strains and stressesdue to sudden impact of loads against the buckets. Y

Preferably, and asdisrcinshown, the buffenyokes are associated with-meansfby which the Iforward `end Vof the boommay be raised and, lowered. Said meansconsists, in the present instance, of threaded, horizontal shafts 53` that extend .through `and are threaded .in fixed abutmients or nuts 54iw-hich are suitably arms 26 of the turntable. The forward ends of said shaftsbcar :against blocks 55 that are fitted to-slide in suitable guides on the arms 26 and which carry the pivots 47 4for the necks A46nd the buffer yokes. Said shafts 53 are providedat theirrear ends with :iperture enlargements ceive an implement be rotated.

'With thisgconstruction it will be apparent that are adfnsvted to reby which the shafts may attached to. vand ,rigid with .the

that when the blocks 55, through the action of said shafts 53, are shifted forwardly to thereby shift the pivoted ends of the buffer yokes forwardly, the forward end of the boom will be raised, swinging about its pivot shaft 32, and that when said blocks 55 are shifted rearwardly the forward end of the boom will be lowered.

The boom is made of such construction that it may be endwise extended in order to afford means to take up the slack of the articulated bucket structure supported thereon. *or this purpose the rear end 33 of the boom is made separate from and is supported on the main boom structure, with the flanges 35 of the rear, detachable end of the boom fitted and sliding within the flanges 38 of the main boom structure to constitute a telescopic connection. The said flanges 38 and 35 are formed with inter locking notches and tongues, as shown in Figs. 6, 7, and 8, to additionally stiifen the telescopic joints of the boem. The main boom structure is provided at its rear end with lugs 60 a 'ainst which bear threaded shafts 61 whic extend through and are threaded in lugs 62 of the rear adjustable boom section. The lugs 60 and 62 and the screw shaft 61 constitute means to adjustably elongate the boom for the purpose of taking u the slack of the bucket structure supporte thereon. In addition to the adjusting means described there are provided braces 63 which are supported on the boom pivot shaft 32and extend forwardly therefrom and obliquely inwardly toward the boom sides, and are formed at their forward ends with slots 64 through which extend clamping screws 65 by which the said braces are fixedly and adjustably connected to the boom.

The endless bucket structure is driven by motor driven mechanism made as follows:

70, designate motors, located one at cach side of the turntable and bolted or otherwise detachably secured thereto. The said motors may be of any desired type, as compressed air. motors, electric motors, steam engines, or the like. The shafts of sald motors carry sprocket pinions 71 which are` connected` by sprocket belts 72 with sprocket gears 73 that are fixed to a horizontal shaft 75 which extends transversely acrossthe turntable inthe plane of its pivot, as .hereinshown Said shaft 75 is a divided shaft, and the sections thereof are mounted in bearings 76 carried by the standards 28 and an intermediate bearing 77 whichrises from the turntable and `which supports the inner ends ofthe shaft sections. The shaft 75 .is `provided adjacent to .each standard '28 with sprocket gears 78 that areconnected by belts 79 with. sprocket gears 80 that are mounted on andixed to the boom pivot shaft 32. Said boom pivot sha-ft sis provided laterally inside the sprocket ears with pinions 82 that mesh with gear W eels 83 which are fixed to the ends of a shaft 84 that is disposed transversely of the rear end of the boom and mounted in suitable bearings 85 carried by said rear end of the boom. Said shaft 84 is provided with sprocket wheels 86 which mesh with suitably formed parts of the bucket structure7 in the nature of a sprocket belt connection, whereby rotation of the gearsy 86 imparts traveling movement to the bucket structure on the flanged tracks of the boom.

Preferably also the bucket structure is driven by a third motor 87 which is located within the hollow boom structure and is connected by a train of sprocket gears 88 to the shaft of the pulleys 89 of the front end of the boom about which the iiexible bucket structure is trained. Said motor 87 may be used in conjunction with the motors 70 or may, for lighter work, be used alone to drive the buckets. The application of power to the bucket structure at both ,ends of the boom enables great force to be applied to the structure to drive the buckets into the work. The valve mechanisms 90 for said motors 70 are controlled by levers 9] connected concentrically to said valve mechanisms and operating on. .segments 92. Preferably, both said valve mechanisms are connected so as to, be operated from the same side of the machine. The connection herein shown consists of a rock shaft 93 which extends across the machine, and has bearing in the standards 28, crank arms 9 4 fixed to said rock shaft, and links 95 which connect said crank arms tothe levers 91. The valve control described enables the motors'70 to be operated in either direction, so that the travel of the bucket structure may be reversed, and again driven forwardly when it is desired Ato exert repeated attacks against the werkte drive the buckets into the materialbeing handled. l,The material isdischarged from the series of buckets .at theI rear end roi the boom on-to a take-oil beltsupportedon a frame 95. Said frame is pivotally mounted on standards 96 which rise from and are connected to a small. turntable 97 that is supported through the medium, ,of anti-frictionrollers ,98 on the rearend Qf the main turntable 18, said turntablefrotating on a fixed shaft 98' which is seated in the .main turntable A hopper 99 receives the material and directs it to said take-olf belt. The frame is supported from the standards 28 through the medium of a yoke 100, whichfislrigid with' the standards 28 and a chainor Cable 101 in Vthe manner shown in my pending application for United States Letters Patent Serial Number 195,-' 21,3, filed on the 8th day of October 1918.

T he turntable operating pinion 25' is herein shownlas driven by al motor that issupportedon the turntable between the standards 28 and is connected through the medium of a worm 106 and a worm wheel 107 with the shaft 108 of said pinion 25. The valve mechanism 109 of said motor, which is a reversing valve mechanism, is o erated through the medium of links 110 willich are attached at their inner ends to a lever arm 111 of said valve mechanism and extend toward the opposite sides ofithe machine, whereby said motor 105, as Well as the motor 70, may be operated from either side of the machine.

In the operation of the machine, the carriage may be driven forwardly during the operation of the buckets so as to -force the buckets into the work, and the traveling bucket structure may be operated either by the motor 70 or the motor 8-0, or both, to force them into the work. The boom and the traveling bucket structure thereon are directed sidewise to the work either through rotation of the turntable or by maneuvering or steering the machine through the proper co-ntrol of the mechanism by which the caterpillar drive is operated.

The end of the boom may 4be raised or lowered `through the action of the screw shafts 53 and the buifer yokes 45 and swings about the shaft 32 as a pivot. The material is directed to the take-oil' belt at the rear, by which it is carried to the place of disposal.

Preferably a uard or housing 115 is arranged beneath t e rear portion of the boom so as to avoid material falling on the transmission mechanism therebelow.

I claim as my invention:

1. A machine for the purpose set forth comprising a carriage, a turntable thereon, standards rising from the turntable, a boom. pivotally supported near its rear end on said standards, buffer members pivotally supported on the turntable, with means for connecting` them to the boom nearits forward end, an endless series of take-up devices travelable on the hoorn` and means to movably su port said buffer `members on the turntabe to thereby adjustably raise and lower the front end of the boom.

2. machine for the purpose sety forth comprising a carriage, a turntable thereon, standards rising from the turntable, a boom pivotally supported near its rear end on said standards, buffer members pivotally connected to said boom near its forward end, blocks seated and slidable on the turntable to which the lower ends of the buffer members arepivotallyconnected, and screw threaded means for adjusting and holding the blocks in their seats on the turntable.

3. machine for the purpose set forth comprlsmg a carriage, a turntable thereon, standards rising from the turntable, a boom pivotally supported near its rear end on said standards, laterally spaced yokes pivotally supported on tl,1e,turntnb.le, .n shurft tendingthrough ancbmonnted in the been), bearingsin seid yokes to receive thmends of the shafts, end springs between Seid bearings landthe endslofthe yqkes.

.4. In aimeehine for the pnl-pose setiferth, a support, aiboom projectmgionwerdlyibeyon said support, standards rising vom said support, a shaft indented onsaid stemlards to whichthe boom is plvoted neer its rear end, means to sustain theiorwnnd `end of the boom from said support, en endlss bucketstructuref-eenried by tlxeLhmm .and traveling thereen, ,seid boom beleg reenstrueted with: two-y members sliidaiblyl engaging each other, .wherebyuthe boem maybe extended in-'length to take upitherelmk-f the bueke-t stm1cture,.meens ,to adustably lock said members of the boomrtogeher, end braeesiformed et theirlrear endsl `.vvlth bearings to receivefthe Aends of thenhoom pivot shaft and extendingforwardlyhtherefrom` toward and attached ,to thetsides of the boom.

5. In a machine for the pnrposefsetorbb, aus port, iii-(boom pnojeeting for'wnndlyi beyon said supportwstendands msingafrem saidsnpport, a shaft mounted onserdstandandere `winch the-lnemnnnsl pmetedsueariets rear end, an yendlesslnneket.stmleturelnarried by said: boonrielndtrevelme: i ',ItlielPeOIl, said boom being constructed of two meinbers slidnbly engaging eenhI otherwwhereby the boom may beentended in lengthtofteke up the sleek oeeid .bucket strueture,-,meens to edjustably look-sadzmembersioi the heom together, braces. .formedl at their reen-ends with bearings t0;freieeiveA the ends. loft seid pivot shaft and -formed .,at then nonwerd ends with slots, ancibV fastening belts-entending through said Slots intozxtheJnoom.

6.: In a, device for thepurpeseeteforth, a. support, stendards `rising*` theretrom, a sheft mounted 'in-.seld standards,l etbeem pvoted near itsnear end to ,Saud sheftnnd extending forwardly beyondi the .seppure enM endless` bucket structure sqpported on the boom, braees fermed at;the1r-,reen ends to provide bearings ,to reeelveutheendsef said pivot shatand. -meensntofesten said braces et their forward. ends tenths-sides of the boom.

7 A maehineiforothe purpse setnforth comprising ,e support, fstan end s rising therefrom, a shaft supported onsa-xdfstenderds, az boomepiisrotedy neer itsreeriend to said shaft sind extending iorwardly beyond said support, .an yendlessV bucket .structure traveling on the beono2 motors mounted-on seid support at the sldesnof the= boom,-a divided-transverse shaft mounted in beerin on Said support .and provided s tits enss with sproeket pinions and operatively connected with the metorsfsprpket-wheels mounted on the `ends of jthe'pivot shaft and conneetedfbybeltslwith the sproket pinions ofrthe duided sheft, .and cQnnwtODS between seid piwt sheft nn'id Athedliviflfr meelisifor; said bueket str untnre- .8. A .inaliehine forthe lpur ,ose .set forth eoniprisinga suppprt, standar y erisingthere-- imm, wishwft supported on said standards, efbmmi Cfivtntefl ,near its reerendto seid sheiftdan :extendingfferwardly beyond and Sustained. en seid isupport, an endless bucket Structure moan-ted toitraveLon thedJoom, meters mounted .on said. suppnrt ,at thesides of the boom, a divided transverse shaft r0- tetivelyfmounted im bearings on said support andnprovided :at its ends Withsproeket pinionsend npenetvelyeonnected with the inntors, Asprocket wheels fixed to` the .ends of said pivet,.sheft and eonneeted by` belts with 4the Splmketfpinions ovfthe divided shaft, and geareormections between saidpivot shaft andi the. driving 1n eens 4for saidtbuoket structure.

`,9. Adnaehine Ifor the purpose set forth comprsinga support, standards rising therefrom, e shaft,supportedY on said standen-ds, :mboom piv-etednenr its rear end to said sha-ft a'nld extending 1 forwardly beyond andsllstained on seidfsnpport, an endless bucket strueture mounted to travel-on the boom, motorsmolmted on said support at the vsides ofl the boom, e divided tIfansveI'Se shaft. notativelynnounted sin' bearings on said support end provided `at its ends ivith sprouket pil-'rions and operatively .connected with the motors, `sprocket wheels vfixed to the ends offsaid 'pivot shaft 4.ndeenneeted 'by helts.with 'the sprofgketpinions df the divided shatfgear Veonn ions between seid pivot shaft and; the Adriving"Ineens fon seid bueket structure,y and a valfve controllingdevicefior saidI :motors conetrnletedI wiilh ineens tof be operetedfrqm'either side of the boom.

rlil. ALmaQhrineffor the yu oselsetfprth comprising a su port,` stan er; s risingth'e'refrom,` ashaft siistagined on said standards, a-boom-` ivoted neer'itserear endfto said shaft ant? extending'forwardly@beyond seid support, en-en les bucket structure mpnt ed on theboom, meters Inonnv lon saidsipportatithe sides ofjthe boom, aldivided trensversevshaft operatively eonneoted with the rnotorsand :mounted in Ien'lsaid support `end provided etifsiendswflth iniro'n's sprocket wheels mounted 'onfthe 'err' sof the pivot shaft and drivenfrom th pniops of'the divided shaftz and gear eo neetions between said` pivot ,sheft ,and the Vy'driving means for the bngketrstnueture `11. A Inechineior the ose set-forth comprising a support, Vstan err 'srising therefroin, esha snsteined on said standfirds' e boom pilvoted neer its rer'ar end tdssid shaft l, and extending forwardly beyond sai support', an endlessvbueke't streture munted to travel onfthe booni, 'motors mounted on seid support et the sides of the boom, e divided transverse shaft operaitively connected with the motors and mounted in bearings on seid support and provided et its ends with pinions, sprocket Wheels mounted on the ends of the pvot shaft and driven from the pinions of the divided shaft, gear connections between seid pivot shaft and the driving means for the bucket structure, and e valve controlling device for seid motors compri-sing e rock shaft extending across the machine and yprovided with crank arms and means for connecting the crank arms to the wotueting members of the motor valves.

12. In a machine for the purpose set forth the combination with e boom, and e series o traveling take-oli' devices thereon, combined with supporting pulleys at the ends of the boom to direet and su ort the take-off devices, motors at the side of the boom, a

opiel et this patent my be obtained for transversely disposed divided shaft opera,- tively connected with the motors, pinions at the ends of seid shaft, ineens seperately connecting said motors to the sections of the divided shaft, and means to operatively connect the pinions of said divided shaft to the diiecting and supporting pulleys of the tekeo device at one end of the boom.

13. In e machine for the purpose set forth, d boom, en endless bucket structure supported and traveling thereon, with pulleys et the ends of the boom for drawing end directing the bucket structure, of ibucket structure driving motors, and means to separately conneet both seid motors to the seid pulleys.

In testimony whereof I claim the foregoing as my invention I hereunto append my si gnature at Chicago, Illinois, this eighteenth day of April, 1918.

GEORGE W. JAKSON.

live uente each, by addressing the Commissioner of Intenta, 

